S-98970A314 1.75" ID x 3.75" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with hot-dipped galvanized steel construction for extended service life in harsh environments
• Optimal load distribution with 3.75" outer diameter preventing surface damage and maintaining joint integrity
• Precise fit for 1 5/8" screws with 1.75" inner diameter ensuring secure fastening and vibration resistance
• Heavy-duty performance with substantial 0.153-0.213" thickness providing reliable bearing surface support
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Environmental responsibility with RoHS 3 compliance ensuring safe use across regulated industries
• Dimensional accuracy manufactured to inch system standards for seamless integration with existing USS components

Professional Applications & Engineering Value

This USS flat washer delivers critical engineering solutions for industrial applications where corrosion resistance and load distribution are paramount. The hot-dipped galvanized steel construction provides a thick, durable zinc coating that withstands environmental exposure in construction, marine, and outdoor equipment applications. The substantial 3.75" outer diameter effectively distributes clamping force over a wider area, preventing surface indentation and maintaining structural integrity under heavy loads. Engineered specifically for 1 5/8" screw sizes, this washer ensures proper seating and vibration resistance in demanding mechanical assemblies. The combination of robust material and precise dimensions makes it ideal for structural steel connections, heavy machinery, and infrastructure projects where long-term reliability is essential.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 specifications with dimensional accuracy in the inch measurement system. Features include 1.75" inner diameter, 3.75" outer diameter, and thickness ranging from 0.153" to 0.213" for consistent performance. This hot-dipped galvanized steel flat washer is RoHS 3 (2015/863/EU) compliant and designed for use with 1 5/8" screw sizes, ensuring regulatory compliance and industrial standard adherence across various applications.